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Inhomogeneous lens antenna 001

2025-12-03
The vertical and horizontal planes of the fan-beam radiation pattern can be determined separately. Wide angle search and detection are achievable by using this type of lens antenna because of its suitable radiation pattern. The proposed relative index profile is validated by the means of commercial CST software and an FDTD scheme.

In recent years, lens antenna systems have been widely used in many applications, such as point-to-point and point-to-multi-point links, automotive radar, Doppler-weather radar, aircraft landing systems, radio astronomy, satellite communications, radio frequency identification, imaging systems at millimeter waves, access control and security, product tracking, logistics, and public transportation. In the literature, researchers have reported many lens antenna based on their working principles. However, the potential of lens antenna seems does not seem to have been fully reached yet.

Lens utilization is a method to improve the gain and side-lobe level (SLL) of feeding antennas[1–4] and can be used in scattering applications[5].

In general, lens antennas can be separated into two categories: homogeneous[6] and inhomogeneous index profiles. There are some methods to realize inhomogeneous lenses, such as material drilling[7–11], PCB techniques[12,13], wire grids[14,15], multilayers[16–18], and other methods[19–22].